Apparatus foe treating oees



(No Model.) 3 Sheets-Sheet 1.

0. BILHARZ. APPARATUS FOR TREATING ORES. 7

No. 469.037. Patented Feb. 16, 1892.

(No Model.) 3 Sheets-Sheet 2. 0. BILHARZ.

APPARATUS FOR TREATING ORES. No. 469,037. Patented Feb. 16, 1892.

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0. BILHARZ.

APPARATUS FOR TREATING ORES.

No. 469,037. Patented Feb. 16, 1892.

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UNITED STATES PATENT O FICE- OSCAR BILIIARZ, OF FREIBERG, GERMANY.

APPARATUS FOR TREATING ORES.

SPECIFICATION formingpart of Letters Patent No. 469,037, dated February 16, 1892. Application filed June 15, 1889; Serial Nio. 314,4i3. (No model.)

To all whom. may concern.-

Be it known that LOSOAR BILHARZ, a subject of the King of Saxony, residing at Frei The usual process for dressing crushed ores and the like consists in treating the orey water on ordinary percussion-frames, which of course must be emptied from time to time. This does not only interrupt the regular working at certain constantly-returning intervals, but at the same time does not obtain a thorough separation of the ore, so that this pro cess is very expensive. In the apparatus which is the object of the present invention these disadvantages are overcome, as the treatment of the ore is performed continuously, which enables me to treat much larger quantities, while at the same time a complete separation of the ore is obtained in any desired number of grades.

In the annexed drawings, which form a part of this specification, Figure 1 shows a side view of the different apparatus used for the performance of my process. Fig. 2 shows a top View of the same, and Fig. 3 a transverse sectional view.

In order to obtain a thorough treatment of such ores that bear the metal in very fine grains, it is desirable to treat them first in a stamping apparatus. Such is more particularly the case for quartz, gold ore, or goldbearing quartz, gold-bearing rubbles, gravel, &c. These ores are stamped in the usual manner, and the stud is then raised by elevators or centrifugal pumps should the stamping apparatus not be placed at an elevated point. The stuff is then fed in a closed sluice, wherein the grains are classified according to their specific gravity, after having first removed the coarsest stuff by means of a sieve trommel with holes of one-half to three-fourths millimeters diameter. The sluice A serves me for this classification of the grains according to their specific gravity. This sluice is gradually widened toward its end in order to obtain a better and quicker classification. This sluice receives its fresh-water pressure from the side conduit S, and is divided lengthwise in to as large anumber of compartments as possible by ineans of the funnel-shaped receptacles a, arranged under its bottom. In the drawings nineteen of these receptacles are'shown, so that every funnel will be filled during the operation with grains of different coarseness, While at the same time the grains in every funnel will have about the same specific gravity. Consequently the first four funnel-shaped receptacles will contain the particles of the largest sizes, the following (located in the middle) will contain'finer grains, and the last tion apparatus. The coarsest grains, class one,

from the four first funnels are directly conveyed to a smallhy draulic jigger. The medium grains, class two, in the middle part of the sluice can be collected every two funnels together and then be conveyed in separate gut ters to so-called hydraulic circular percussion-jiggers (3, each of which willfurthertreat the ore which is fed to it, the only thing necessary being to change the beddings or layers on the sieves accordingly. The fine grains contained in the enriched stuff collected in the sluice A, and which in compound ores constitutes the diiferent metallic substances in mineral form and in less compound ores-for instance, gold oreconstitutes the gold, is entirely taken up by the layer of the sieve and sinks to the bottom of the jigger. The other part, wherein no metal is contained, is carried away by the stream over the border and discharged by the central pipe of the apparatus in the natural stream or to a central apparatus. The particles passed through the beddings of the jiggers are conveyed to 0011- tinnous percussion-frames D, suitably placed to this effect, where they are separated into their different components, as galena, arsenic pyrites, iron pyrites, blende, and waste:

lhe ore of the third class of the sluice is submitted to atreatmentsimilar to that of the ore of the second class. The only difference is that the finer grains are conveyed to a round piston-jigger, which concentrates the same in a similar manner, and from Where they are transferred to similar percussion-frames as those used for the grains of the second class.

. The fourth and last class of the stuff, the slime, is collected by a waste-launder B, and is from there conveyed to percussion-frames, receiving Weaker blows and with a smaller supply of fresh water to yield here the same products as on the other percussion-frames.

It being possible that in this process, according to the nature of the treated stuff, side products maybe met with, it will be useful to keep ready for use some reserve apparatus. So the treatment of the stuff of the first class may require one or two Salzburgerpercussionframes, the second class some percussion frames with revolving belts, and for the third and fourth classes some buddies-of a limited diameter.

For gold, coal, and iron slime the probability of finding such by-products is much smaller, and such reserve apparatusmay therefore be dispensed with.

If only the extraction of a single precious product isaimed at, the percussion-frame treatment may, if not dispensed with altogether, be considerably limited at any rate.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

OSCAR BILl-IARZ.

=Witnesses: P; SPREOKELS,

PAUL DRUCKMULLER. 

